Quartz mill



afan.; :2L-1923; l

, J. ENDERS. 1,'441,147.

QUARTZ .MILLE` ,man utc. 29.* 1521.

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Patented 2, i323.. n i y nutren eranrorricn- JOHN ENDERS, OF SAN BEBNARDNG, CALXFORNIA.

QUARTZ Miri.. y

Application filed December 29, 1921. ySerial No. 525,675.

To all whom it may cm1/ccm: and in the present instance comprises an ar- Be it lrnown that l, JOHN Fivonns, a citicuate shaped plate l5 which forms the botzen of 'the llnited States, residing at San trom and end walls of the container and side Eernardino, in the county of San Bernardino plates 16 suitably securedl at their edges to 5 and State of California, have invented new the edges of the plate'l. 'As shown in Fig. eo and useful Improvements in Quartz Mills, of 5, one of the plates is formed with an which the following isa specification. opening which `s spanned by a wire screen My invention relates generally to grindor other foraminous material k17r secured in ing mills, and more particularly to mills for position by a frame 18 of rectangular form. 10 eifecting'the disintegration or reduction of This frame 18 being removable permits of Ge mineral ores, such as quartz and the lilre. the removability ofthe screen 17, so .that A purpose of my invention is the proviwhen the latter becomes worn, a new screen sion of a grinding mill which operates to can be readilysubstituted. The frame 18 is effect the complete reduction of ore to any provided at its side and bottom edges with La desired degree offineness by an adjustment flanges which constitute a spout designated 70 of a movable grinding element with respect .at k19 throughlwhich the material is adapted to a stationary grinding element, the mill to be discharged from the container.

being of such simple construction as to per- As shown in Figs and` 4, the container C mit of its being made from boiler plate and has arranged therein a stationary grinding 20 consequently inexpensively manufactured. element as designated at G. rlhis element is 75 It is also a purpose of my invention to pro in the form of a steel casting of arcuate for vide a mill having ore concentrating` means mation withits ends providedy with flanges y associated and acting in conjunction with the 2O to which are secured the lower ends of ore reduction means to simultaneously rehangers 21. The'upper ends of the hangers cover the valuable vparticles of the ore. are in turn secured to slotted beams 22 span- S0 l will describe one form of grinding mill ning the upper edges of the container, in the embodyingvmy invention and will then point manner clearly shown in Fig. 2. The mill out the novel features thereofin claims.` also includes a movable grindingk element ln the accompanying drawings, designated at G', which is constructed of the Figure 1 is a view yshowing in side elevasame material'and in the saine form, except 85 tion one form of grinding mill 'embodying that the radius of the arc upon which is y my invention. formed is less than the radius of the arc of Fig.'2 is a top plan view of the mill shown the stationary grinding elementGr. y This elein Fig. 1. ment Gr is supported for oscillatory move- Fig. 3 isa view showingthe vertical longi i ment within the container by means of 90 tudinal section of the mill shown in the prethreaded rods 23 arranged in cylinders 24 ceding views and taken on the line 3*-3 of and provided with heads 25 at their lower Fig. 2. v v ends for preventing their upward displace- Fig. 4 is a view similar to Fig. 3 takeny on ment, and provided at their upper ends with 40 the line 4-4 of Fig. 2. v l nuts 26 having bearing ears 27. The ears 27 95 Figure `5 is a central vertical transverse are formed of relatively sharp edges which sectional view of the grinding mill shown in are disposed in notches 28 formed in the the preceding view. i beams 22. rlhis provides a bearing surface Similar reference characters refer to simof practically negligible friction so that the ilar parts in each of the several views. actuation of the movable .grinding element 100 Referring specifically to the drawings, and can be effected with small power consumpparticularly to Figs. 3 and 5, my invention, tion. y

in its present embodiment, comprises a conrlhe rods 23 are slidably fitted in suitable tainer or tank designated generally at C openings formed in a concentrating pan deswhich is rigidly supported in working poignated' at P which as shown in Figs.' 3 and k105 sition upon a base plate B by meansof sup- 4, is secured in spanning relation to the ports or standards A whichv are securely upper edges of the movablev grinding elementr bolted to the container inloase plate, as is: .G with all of its edges upturned to confine clearly shown in Fig. 3. thel material which it .is adapted to cpntam The container C is of semicircular form.. therein during the oscillation ofthe grinding ble Jfriction. lit

element. For actuating the grinding element, an arm or rod 29 is secured in an upstanding position on the pan P with its upper end connected to a link 30. The link 30 is in turn eccentrically connected to a wheel 3l to which power is adapted to be applied, it being understood however that any conventional mechanism may be e1nployed ttor actuating the grinding element in that l do not wish tobe restricted to the precise construction herein shown and described.

The rod 29 is maintained in upsi'sanding` position by brace bars 32 secured to the pan l) in converging relation to each other'and having` their upper ends formed with arcu ately curved extensions which are clamped in secure engagement to a sleeve 3st by bolts 35, the sleeve embracing the rods as shown.

Coil expansible springs 36 surround the `rods 23 and engage the pan P at their lower ends, while at their upper ends engage disc heads 37 slidably fitted within the cylinders 24, and such heads being maintained in any adjusted position by means of nuts 38 fitted on the rods 23.

By this arrangement it will be clear that the springs 36 normally urge the movable grinding element G downwardly toward the stationary grinding element G, and that by an adjustment of the nuts 38 a variance in the tension of the springs can be secured.

which in turn varies the degree of pressureL with which the stationary grinding element is urged downwardly.

The operation of the mill is as follows: The ore together with the necessary amount of water is introduced into the top ot the container through a spout 39 as shown in Figs. l and 4L. The ore nds its way to a point between the elements G and G', and upon rotation oi' the wheel 3l oscillation et the movable grinding element G is etliected which, under the tension of the springs 36, eects a grinding or crushing of the ore between the elements. The grinding element G as a unit swings about the bearing ears 2,7 as a center, and because ot the formation of the bearings and notches it will be clear that the element moves with the least `,gossiit is desired to increase the tension exerted upon the movable grindingelement to increase the grinding action, it will be clear that by an adjustment of the nuts 38, such grinding act-ion can be increased to the desired degree. This renders it possible to grind ore to any desired degree of iineness, which is oie great value in the separation of ore.

The concentrating pan `l? is adapted to contain mercury or any other suitable con centrating agent, and during the oscillation of the movable grinding;l element the valuable particles of ore are deposited within the` pan, that is, subsequent to the grinding process. lAs the grinding element oscillates the .mercury operates to etlect a concentration ot the valuable particles oi' ore so that the recovery thereoiiis effected simultane-A ously with the grinding o-i':l the ore. lt is to be understood that the liquid is continuously discharged from the container through the spout i9, the screen 1T serving to confine the Valuable particles of ore within the container, as will be, understood those skilled in the art. l

ln the foregoing description ta junction with the aocompanyin I it will be manifest that l pic-ide a mill which is of extremely simple and efficient construction in that the container can be constructed et boiler plate, and that the grinding` elements can be readily east at a small expense. rllhe mounting of the iiiovJ able grinding element permits oi: its easyv operation, the small consumption of power, so that the mill in its entirety can be constructed and operated economically.

Y lVliat l claim is:

l. A grinding mill comprising a stationary grinding element. a movable grinding element mounted for oscillatory ii'ioveineiit and adapted to coact with the stationary grinding` element, and a concentrating pan disposed above and movable with the movable grinding element.

2. A grinding mill comprising a stationary grinding element, a movable grinding element for oscillatory,movement and adapted to co-act withthe stationary grinding element, and a concentrating` pan movable with the movable grinding' element.

3. .il grinding mill comprising a container, a stationary grinding element within the container, a movable grinding element, both of said elements being of arcuate form, beams sustained on the container, rods movably associated with the movable grinding element, bearing ears carried by the rods and engageable with the beams to provide an axis about which the movable grinding element is adapted to oscillate, siiirings along said rods for urging the movable grinding element toward the stationary grinding element, and nuts mounted on the rods and adjustable to vary the tension of said springs.

4l. A grinding mill comprising a. container, a stationary grinding element within the container, a movable griniling. element co-acting with the stationary grinding element and mounted ilor oscillatory movement, a pan secured to the movable tjrinding elenient, rods slidably fitted `in the pan, cylin- "en in con ders surrounding the rods, expansible springs surrounding the rods and interposed between the cylinders, heads mounted on the rods and engageable with the springs, and nuts adjustable to vary the position ofv the heads to increase or decrease the tension of the springs for the purpose described,

5. A grinding mill. comprising a stationaaai arjfY grinding element, a movable grinding element, beams sustained above tbe elements, rods movably associated with the movable grinding element and engaging said beams to provide pivots for the movable grinding element, and adjustable and yieldable means for urging the movable grinning element toward the stationary element.

6. A grinding mill comprising a containen a stationary grinding element Within the container', beams sustained. on the container and formed with slots. brace bars secured to the grinding element, means adjustable Within the slots ot said beams for securing the bars to the beams? a movable grinding element, rods movably associated ivith the movable grinding element, bearing ears threaded on the rods and engageable with the beams to provide an axis about which the movable grinding 'element is adapted to move, and yieldable means for urging the movable grinding element toward the sta tionarj7 grinding element.

7: A grinding mill comprising a container, a stationary grinding element Within the container, a movable grinding element, both oi saidv elements being oi' arcuate form, beams sustained on the container, rods movably associated with the movable grinding element, bearing ears carried by the rods and engageable with the beams to provide an axis about which the movable grinding' elementis adapted to oscillate, resilient means associated With said rods tor urging the movable grinding elementtoward the stationary grinding element, and means mounted on the rods and adjustable to vary the tension of said springs. v

In testimony whereof I have signed my name to this specication.

Jomv nivnnss. n 

